Angry Birds

Are you honestly surprised to see this game on the list? Even if you’ve never played Angry Birds, you’ve been in close proximity to someone who’s been playing it—whether you realized it or not. The most popular mobile game in the history of the universe is a must-have just out of sheer principle.

It epitomizes the concept of simple and addictive gaming: You have a bird on a slingshot (why can’t they fly?), you pull the bird back, you let the slingshot go. Then the bird crashes into structures and/or pigs. Repeat!